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<?php $array = [ "one" => ["id" => 111, "name" => "Jhon"], "two" => ["id" => 222, "name" => "Adam"], "three" => ["id" => 111, "name" => "Mark"], "four" => ["id" => 125, "name" => "Jhon"], "five" => ["id" => 111, "name" => "Jhon"], "six" => ["id" => 222, "name" => "Rock"], ]; // store added IDs $added = []; // filter array (need to pass $added as reference to be updated) $output = array_filter($array, function($item) use (&$added) { // shortcut for readability $id = $item['id']; // Check if id already exists if (isset($added[$id])) { return false; } // add to reference $added[$id] = true; // add to final array return true; }); unset($added); // no longer needed. var_dump($output);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ide7a
function name:  (null)
number of ops:  14
compiled vars:  !0 = $array, !1 = $added, !2 = $output
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
   12     1        ASSIGN                                                   !1, <array>
   15     2        INIT_FCALL                                               'array_filter'
          3        SEND_VAR                                                 !0
          4        DECLARE_LAMBDA_FUNCTION                          ~5      [0]
          5        BIND_LEXICAL                                             ~5, !1
   25     6        SEND_VAL                                                 ~5
   15     7        DO_ICALL                                         $6      
          8        ASSIGN                                                   !2, $6
   27     9        UNSET_CV                                                 !1
   29    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !2
         12        DO_ICALL                                                 
         13      > RETURN                                                   1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 7
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ide7a
function name:  {closure}
number of ops:  11
compiled vars:  !0 = $item, !1 = $added, !2 = $id
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   15     0  E >   RECV                                             !0      
          1        BIND_STATIC                                              !1
   18     2        FETCH_DIM_R                                      ~3      !0, 'id'
          3        ASSIGN                                                   !2, ~3
   20     4        ISSET_ISEMPTY_DIM_OBJ                         0          !1, !2
          5      > JMPZ                                                     ~5, ->7
          6    > > RETURN                                                   <false>
   22     7    >   ASSIGN_DIM                                               !1, !2
          8        OP_DATA                                                  <true>
   24     9      > RETURN                                                   <true>
   25    10*     > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


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